Marking apparatus having feedback-controlled rotational laser beam
AssigneeTopcon Corporation
InventorsFumio Ohtomo, Hiroyuki Nishizawa, Jun-ichi Kodaira, Kenichirou Yoshino
Life of this patent
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Abstract
A rotating laser apparatus having a reciprocating laser scanning system which facilitates visual recognition of a laser beam on an object to be measured by raising an effective energy level on the object. In the apparatus the laser beam is rotated by a rotation device. The reciprocating laser scanning system includes reflection members for reflecting the laser beam, a laser beam detector for detecting a return laser beam reflected from the reflection means, and a control members, microcomputer a rotation of the rotation device in accordance with the output of the laser beam detector.
Claims10
A rotational laser beam apparatus, comprising:
- a laser source for emitting a laser beam;
- laser beam projecting means for projecting the laser beam;
- rotary means for rotating the laser beam, said rotation means being rotatable and having a search mode and a scan mode, and rotation of the laser beam defining a laser reference plane;
- first and second reflecting members for reflecting the laser beam projected by said projecting means, said first and second members being located on the laser reference plane;
- laser beam detecting means for detecting a return laser beam reflected from said first and second reflecting members and producing an output based on detection of the return laser beam;
- and
- control means for changing rotation of said rotary means from said search mode to said scan mode based on the output of said laser beam detecting means and for controlling rotation of said rotary means in said scan mode based on the output of said laser beam detecting means.
Dependencies are inferred from the claim text.